1 // Auto-generated file. Do not edit!
2 // Template: src/x24-transposec/scalar.c.in
3 // Generator: tools/xngen
4 //
5 // Copyright 2022 Google LLC
6 //
7 // This source code is licensed under the BSD-style license found in the
8 // LICENSE file in the root directory of this source tree.
9
10
11 #include <assert.h>
12
13 #include <xnnpack/common.h>
14 #include <xnnpack/math.h>
15 #include <xnnpack/transpose.h>
16
xnn_x24_transposec_ukernel__4x2_scalar(const void * input,void * output,size_t input_stride,size_t output_stride,size_t block_width,size_t block_height)17 void xnn_x24_transposec_ukernel__4x2_scalar(
18 const void *input,
19 void * output,
20 size_t input_stride,
21 size_t output_stride,
22 size_t block_width,
23 size_t block_height)
24 {
25 assert(output_stride >= block_height * 3);
26 assert(input_stride >= block_width * 3);
27
28 const size_t input_reset = 6 - round_down_po2(block_height, 4) * input_stride;
29 const size_t output_reset = 2 * output_stride - block_height * 3;
30 const size_t input_offset = 4 * input_stride;
31
32 const uint8_t* i0 = (const uint8_t*) input;
33 const uint8_t* i1 = (const uint8_t*) ((uintptr_t) i0 + input_stride);
34 const uint8_t* i2 = (const uint8_t*) ((uintptr_t) i1 + input_stride);
35 const uint8_t* i3 = (const uint8_t*) ((uintptr_t) i2 + input_stride);
36
37 uint8_t* o0 = (uint8_t*) output;
38 uint8_t* o1 = (uint8_t*) ((uintptr_t) o0 + output_stride);
39
40 do {
41 if XNN_UNPREDICTABLE(block_width < 2) {
42 o1 = o0;
43 }
44 size_t bh = block_height;
45 for (; bh >= 4; bh -= 4) {
46 o1[0] = i0[3];
47 o1[1] = i0[4];
48 o1[2] = i0[5];
49 o1[3] = i1[3];
50 o1[4] = i1[4];
51 o1[5] = i1[5];
52 o1[6] = i2[3];
53 o1[7] = i2[4];
54 o1[8] = i2[5];
55 o1[9] = i3[3];
56 o1[10] = i3[4];
57 o1[11] = i3[5];
58 o1 += 12;
59 o0[0] = i0[0];
60 o0[1] = i0[1];
61 o0[2] = i0[2];
62 o0[3] = i1[0];
63 o0[4] = i1[1];
64 o0[5] = i1[2];
65 o0[6] = i2[0];
66 o0[7] = i2[1];
67 o0[8] = i2[2];
68 o0[9] = i3[0];
69 o0[10] = i3[1];
70 o0[11] = i3[2];
71 o0 += 12;
72 i0 = (const uint8_t*) ((uintptr_t) i0 + input_offset);
73 i1 = (const uint8_t*) ((uintptr_t) i1 + input_offset);
74 i2 = (const uint8_t*) ((uintptr_t) i2 + input_offset);
75 i3 = (const uint8_t*) ((uintptr_t) i3 + input_offset);
76 }
77 const uint8_t* i = i0;
78 if (bh & 2) {
79 o1[0] = i0[3];
80 o1[1] = i0[4];
81 o1[2] = i0[5];
82 o1[3] = i1[3];
83 o1[4] = i1[4];
84 o1[5] = i1[5];
85 o1 += 6;
86 o0[0] = i0[0];
87 o0[1] = i0[1];
88 o0[2] = i0[2];
89 o0[3] = i1[0];
90 o0[4] = i1[1];
91 o0[5] = i1[2];
92 o0 += 6;
93 i = i2;
94 }
95 if (bh & 1) {
96 o1[0] = i[3];
97 o1[1] = i[4];
98 o1[2] = i[5];
99 o1 += 3;
100 o0[0] = i[0];
101 o0[1] = i[1];
102 o0[2] = i[2];
103 o0 += 3;
104 }
105
106 i0 = (const uint8_t*) ((uintptr_t) i0 + input_reset);
107 i1 = (const uint8_t*) ((uintptr_t) i0 + input_stride);
108 i2 = (const uint8_t*) ((uintptr_t) i1 + input_stride);
109 i3 = (const uint8_t*) ((uintptr_t) i2 + input_stride);
110 o0 = (uint8_t*) ((uintptr_t) o0 + output_reset);
111 o1 = (uint8_t*) ((uintptr_t) o1 + output_reset);
112 block_width = doz(block_width, 2);
113 } while (block_width != 0);
114 }
115